what do da vinci, darwin, and picasso have in common?

my first impression of this tendril, as i was looking at it through the viewfinder on my camera, was that it looked like a face. the kind of face picasso might doodle. but on closer inspection, on my imac, i see it is a perfect example of darwin’s tendril perversion, in which tendrils adopt the shape of two sections of counter-twisted helices with a transition in the middle. while we are at it, shall me talk about da vinci’s obsession with spirals? da vinci, darwin, picasso. quite a mighty tendril.

wild grape vine tendril